. The development of osseous fishes. ^V /,i. / I ; I PLATE XLII. Fig. 1. P. oblongus. Sections drawn at intervals. Young ring stage cut transversely into sixty- (94) three sections (.0075 mm.), [be = blastocoele; ep = epidermis; pb = periblast). Diagram 12 = longitudinal median section, constructed from the transverse sections. .0075mm. X 280 equals apparent thickness of each section. This amounts to mm. X 63gives apparent length of the cap, which is mm. Measuring off mm., I divided itinto sixty-three equal parts, and then by vertical measurements of each section constructe
. The development of osseous fishes. ^V /,i. / I ; I PLATE XLII. Fig. 1. P. oblongus. Sections drawn at intervals. Young ring stage cut transversely into sixty- (94) three sections (.0075 mm.), [be = blastocoele; ep = epidermis; pb = periblast). Diagram 12 = longitudinal median section, constructed from the transverse sections. .0075mm. X 280 equals apparent thickness of each section. This amounts to mm. X 63gives apparent length of the cap, which is mm. Measuring off mm., I divided itinto sixty-three equal parts, and then by vertical measurements of each section constructedthe diagram. Thickness of upper layer in the sections. (Apparent of magnified 280). 8th section = 15 mm 10 = 16 12 (( = 15 13 it = 15 14 11 = 14 15 = 15 16 = 13 17 ft = 14 18 (( = 13 19 = 14 20 (( = 14 21st n = 13 22 d 11 = 13 23rd IC = 13 24th = 12 25 (£ = 12 26 It = 13 27th section = mm. 28 = 11 29 = 10 30 = 10 31st = 10 32d = 10 33rd = 10 34th = 9 35 = 8 36-50th = S 53d = 10 54th = 55 = 9 56 = 10 59 = 10 60 = 8 61st = 8 The se
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectfishes, bookyear1885
